Bongo Free-For-All (Free Comic Book Day 2014)

It's the foremost FCBD four-color giveaway of the year! Bart and Milhouse seek superheroic origin stories by attempting to acquire "accidental" superpowers... and learn that with trying to obtain great power comes great irresponsibility! Plus: Bart and Prof. Frink become trapped in between dimensions when a science demonstration goes awry, and C. Montgomery Burns takes us on a guided tour through the bowels of the Springfield Nuclear Power Plant!